A library for YAML manipulation to parse, modify and generate yaml code and comments

that can parse yaml code to Yaml Abstract syntax tree (AST) data structure

modify ast, so you can change value, object, array values and can change comment text

generate yaml code from yaml Abstract syntax tree (AST) data structure

Input Example:

json:
  - rigid
  - better for data interchange
yaml:
  - slim and flexible
  - better for configuration
object:
  key: value
  array:
    - boolean: true
    - integer: 1

The goal is to change value of key with name key to HelloWorld

// First parse code and generate Abstract syntax tree
var yamlAST = yamlParser.parseYamlCode(inputPath);

// Get list of value of object with key = object
List objectValList = yamlAST.getNodeValue('object').value.getValue();

// Node with key = 'key' is first value in object list
Node node = objectValList[0];

// After get the target node change the value of it
node.value.setValue('HelloWorld');

// Generating yaml text code for the new Yaml ASt after change
var outputYaml = yamlWriter.generateYamlString(yamlAST);

// write new code in output file
writeFileContent(outputPath, outputYaml);

Output Example :

json:
  - rigid
  - better for data interchange
yaml:
  - slim and flexible
  - better for configuration
object:
  key: HelloWorld
  array: 
    - boolean: true
    - integer: 1

You can change the comment text to every comment key is equal comment_ + number of comment for example first comment key = comment_0